Exerciser with Two Rotatable Disks

ABSTRACT

An exerciser includes a hollow base having two openings. Each opening includes at least one first circular groove. Two bearing members are received in the two openinigs, and each has a frame with which a plurality of balls are rotatably engaged. Two disks are rotatably mounted on the two bearing members respectively, and each disk includes at least one second circular groove and teeth defined in an underside thereof. The balls are rotatably engaged between the at least one first circular groove and the at least one second circular groove. A driving gear is located in the hollow base and engaged with the teeth of both of the two disks.

FIELD OF THE INVENTION

The present invention relates to an exerciser having two rotatable disks located at a distance and a gear drives the two rotatable disks to rotate in the same directions simultaneously.

BACKGROUND OF THE INVENTION

A conventional exerciser named twister known to applicant includes a base with a rotatable disk connected on a top thereof and a bearing member is located beneath the rotatable disk. The user stands on the disk by his or her two feet and rotates the disk in two opposite directions alternatively to twist and exercise the body. However, the only rotatable disk provides a limited area for the user so that the user has to try hard to keep balance on the rotatable disk, the bearing member makes the rotatable disk to be easily rotated and this often cause falling for the user. Most of the users do not take the risk to try the exerciser because the unstable nature.

The present invention intends to provide an exerciser that includes two rotatable disks so that the user can stand on the two rotatable disks in a stable status

SUMMARY OF THE INVENTION

The present invention relates to an exerciser which comprises a hollow base having two openings and each opening includes at least one first circular groove defined in an inner end thereof. Two bearing members each have a frame which has at least one rail and holes are defined through the at least one rail. A plurality of balls are rotatably received in the holes. Two disks are rotatably mounted on the two bearing members respectively and each disk includes at least one second circular groove and teeth defined in the underside thereof. The balls are rotatably engaged between the at least one first circular groove and the at least one second circular groove. A driving gear is located in the hollow base and engaged with the teeth of both of the two disks.

The primary object of the present invention is to provide an exerciser with two rotatable disks which are rotated in the same directions.

The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded view to show the exerciser of the present invention;

FIG. 2 is a side cross sectional view to show a part of the exerciser of the present invention;

FIG. 3 shows a user stands on the two disks of the exerciser of the present invention, and

FIG. 4 shows that the driving gear is engaged with teeth of the two rotatable disk of the exerciser of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIGS. I to 3, the exerciser of the present invention comprises a hollow and thin base 10 which includes two openings defined in a top thereof and each opening includes two first circular grooves 11 defined in an inner end thereof. Two bearing members 20 are received in the openings and each bearing member 20 has a frame which has two circular rails 21 and holes are defined through the rails 21. A plurality of balls 22 are rotatably received in the holes.

Two disks 40 are rotatably mounted on the two bearing members 20 respectively and each disk 40 has two second circular grooves 42 defined in an underside thereof. The balls 22 are rotatably engaged between the first and second circular grooves 11, 42. Each disk 40 has teeth 42 defined in the underside thereof. The two disks 40 each have a central hole and two axes extend through the two central holes and the two bearing members 20 and are rotatably engaged with two recessed in the hollow base 10.

A driving gear 60 is located in the hollow base 10 and engaged with the teeth of both of the two disks 40 as shown in FIG. 4.

It is noted that a distance between the two disks 40 is substantially a width of a user's shoulders so that the user can stand on the two disks 40 comfortably. The user twists his or her body to rotate the two disks 40 and because the driving gear 60 is engaged with the teeth of both of the two disks 40, the two disks 40 are rotated in the same direction simultaneously. The important feature effectively helps the user to keep balance on the disks 40.

While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention. 

1. An exerciser comprising: a hollow base having two openings, with each opening including at least one first circular groove defined in an inner end thereof; two bearing members each having a frame with at least one rail, a plurality of holes defined through the at least one rail, and a plurality of balls rotatably received in the holes; two disks rotatably mounted on the two bearing members respectively, with each each disk having at least one second circular groove defined in an underside thereof, the balls rotatably engaged between the at least one first circular groove and the at least one second circular groove, with each disk having teeth defined in the underside thereof; and a driving gear located in the hollow base and engaged with the teeth of both of the two disks.
 2. The exerciser as claimed in claim 1, wherein a distance between the two disks is substantially a width of a user's shoulders.
 3. The exerciser as claimed in claim 1, wherein the two disks each have a central hole and an axis, wherein the two axes extend through the two central holes and the two bearing members and rotatably engage the two disks and the hollow base together. 